Merge 5.10 into 5.10.0

Change-Id: I68e1137c57cdb4c585dd44b0528744bde7df047a

29 files changed, 606 insertions, 137 deletions

diff --git a/src/qml/doc/qtqml.qdocconf b/src/qml/doc/qtqml.qdocconf
index 74b61fd6e1..6161760471 100644
--- a/src/qml/doc/qtqml.qdocconf
+++ b/src/qml/doc/qtqml.qdocconf
@@ -53,6 +53,8 @@ manifestmeta.thumbnail.names += "QtQml/Chapter 4*" \
                                 "QtQml/Chapter 6*" \
                                 "QtQml/C++ Extensions: *"
 
+manifestmeta.highlighted.names = "QtQml/Writing QML Extensions with C++"
+
 navigation.landingpage = "Qt QML"
 navigation.cppclassespage = "Qt QML C++ Classes"
 navigation.qmltypespage = "Qt QML QML Types"
diff --git a/src/qml/qml/qqmlimport.cpp b/src/qml/qml/qqmlimport.cpp
index a85166da65..334bc8b28e 100644
--- a/src/qml/qml/qqmlimport.cpp
+++ b/src/qml/qml/qqmlimport.cpp
@@ -1539,7 +1539,7 @@ bool QQmlImportsPrivate::addFileImport(const QString& uri, const QString &prefix
     if (isImplicitImport) {
         for (QList<QQmlImportInstance *>::const_iterator it = nameSpace->imports.constBegin();
              it != nameSpace->imports.constEnd(); ++it) {
-            if ((*it)->uri == importUri) {
+            if ((*it)->url == url) {
                 (*it)->implicitlyImported = true;
                 return true;
             }
diff --git a/src/qml/qml/qqmltypeloader.cpp b/src/qml/qml/qqmltypeloader.cpp
index b9d6c521de..8e9f57f661 100644
--- a/src/qml/qml/qqmltypeloader.cpp
+++ b/src/qml/qml/qqmltypeloader.cpp
@@ -316,7 +316,8 @@ Returns true if the status is WaitingForDependencies.
 */
 bool QQmlDataBlob::isWaiting() const
 {
-    return status() == WaitingForDependencies;
+    return status() == WaitingForDependencies ||
+            status() == ResolvingDependencies;
 }
 
 /*!
@@ -608,6 +609,7 @@ The default implementation does nothing.
 */
 void QQmlDataBlob::allDependenciesDone()
 {
+    m_data.setStatus(QQmlDataBlob::ResolvingDependencies);
 }
 
 /*!
@@ -2499,6 +2501,8 @@ void QQmlTypeData::continueLoadFromIR()
 
 void QQmlTypeData::allDependenciesDone()
 {
+    QQmlTypeLoader::Blob::allDependenciesDone();
+
     if (!m_typesResolved) {
         // Check that all imports were resolved
         QList<QQmlError> errors;
@@ -2618,6 +2622,10 @@ void QQmlTypeData::resolveTypes()
 
         if (ref.type.isCompositeSingleton()) {
             ref.typeData = typeLoader()->getType(ref.type.sourceUrl());
+            if (ref.typeData->status() == QQmlDataBlob::ResolvingDependencies) {
+                // TODO: give an error message? If so, we should record and show the path of the cycle.
+                continue;
+            }
             addDependency(ref.typeData);
             ref.prefix = csRef.prefix;
 
diff --git a/src/qml/qml/qqmltypeloader_p.h b/src/qml/qml/qqmltypeloader_p.h
index ef63e02b4f..22ac61968f 100644
--- a/src/qml/qml/qqmltypeloader_p.h
+++ b/src/qml/qml/qqmltypeloader_p.h
@@ -98,6 +98,7 @@ public:
         Null,                    // Prior to QQmlTypeLoader::load()
         Loading,                 // Prior to data being received and dataReceived() being called
         WaitingForDependencies,  // While there are outstanding addDependency()s
+        ResolvingDependencies,   // While resolving outstanding dependencies, to detect cycles
         Complete,                // Finished
         Error                    // Error
     };
diff --git a/src/quick/doc/snippets/pointerHandlers/dragHandler.qml b/src/quick/doc/snippets/pointerHandlers/dragHandler.qml
index 349cdcb95f..78a7db5b0c 100644
--- a/src/quick/doc/snippets/pointerHandlers/dragHandler.qml
+++ b/src/quick/doc/snippets/pointerHandlers/dragHandler.qml
@@ -1,12 +1,22 @@
 /****************************************************************************
 **
 ** Copyright (C) 2017 The Qt Company Ltd.
-** Contact: http://www.qt.io/licensing/
+** Contact: https://www.qt.io/licensing/
 **
 ** This file is part of the documentation of the Qt Toolkit.
 **
 ** $QT_BEGIN_LICENSE:BSD$
-** You may use this file under the terms of the BSD license as follows:
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** BSD License Usage
+** Alternatively, you may use this file under the terms of the BSD license
+** as follows:
 **
 ** "Redistribution and use in source and binary forms, with or without
 ** modification, are permitted provided that the following conditions are
diff --git a/src/quick/doc/snippets/pointerHandlers/dragHandlerDifferentTarget.qml b/src/quick/doc/snippets/pointerHandlers/dragHandlerDifferentTarget.qml
index e8f2a04e6a..4c4168de83 100644
--- a/src/quick/doc/snippets/pointerHandlers/dragHandlerDifferentTarget.qml
+++ b/src/quick/doc/snippets/pointerHandlers/dragHandlerDifferentTarget.qml
@@ -1,12 +1,22 @@
 /****************************************************************************
 **
 ** Copyright (C) 2017 The Qt Company Ltd.
-** Contact: http://www.qt.io/licensing/
+** Contact: https://www.qt.io/licensing/
 **
 ** This file is part of the documentation of the Qt Toolkit.
 **
 ** $QT_BEGIN_LICENSE:BSD$
-** You may use this file under the terms of the BSD license as follows:
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** BSD License Usage
+** Alternatively, you may use this file under the terms of the BSD license
+** as follows:
 **
 ** "Redistribution and use in source and binary forms, with or without
 ** modification, are permitted provided that the following conditions are
diff --git a/src/quick/doc/snippets/pointerHandlers/dragHandlerNullTarget.qml b/src/quick/doc/snippets/pointerHandlers/dragHandlerNullTarget.qml
index e210ce0952..09429ec1d2 100644
--- a/src/quick/doc/snippets/pointerHandlers/dragHandlerNullTarget.qml
+++ b/src/quick/doc/snippets/pointerHandlers/dragHandlerNullTarget.qml
@@ -1,12 +1,22 @@
 /****************************************************************************
 **
 ** Copyright (C) 2017 The Qt Company Ltd.
-** Contact: http://www.qt.io/licensing/
+** Contact: https://www.qt.io/licensing/
 **
 ** This file is part of the documentation of the Qt Toolkit.
 **
 ** $QT_BEGIN_LICENSE:BSD$
-** You may use this file under the terms of the BSD license as follows:
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** BSD License Usage
+** Alternatively, you may use this file under the terms of the BSD license
+** as follows:
 **
 ** "Redistribution and use in source and binary forms, with or without
 ** modification, are permitted provided that the following conditions are
diff --git a/src/quick/doc/snippets/pointerHandlers/pinchHandler.qml b/src/quick/doc/snippets/pointerHandlers/pinchHandler.qml
index 841e401da1..955047d115 100644
--- a/src/quick/doc/snippets/pointerHandlers/pinchHandler.qml
+++ b/src/quick/doc/snippets/pointerHandlers/pinchHandler.qml
@@ -1,12 +1,22 @@
 /****************************************************************************
 **
 ** Copyright (C) 2017 The Qt Company Ltd.
-** Contact: http://www.qt.io/licensing/
+** Contact: https://www.qt.io/licensing/
 **
 ** This file is part of the documentation of the Qt Toolkit.
 **
 ** $QT_BEGIN_LICENSE:BSD$
-** You may use this file under the terms of the BSD license as follows:
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** BSD License Usage
+** Alternatively, you may use this file under the terms of the BSD license
+** as follows:
 **
 ** "Redistribution and use in source and binary forms, with or without
 ** modification, are permitted provided that the following conditions are
diff --git a/src/quick/doc/snippets/pointerHandlers/pinchHandlerDifferentTarget.qml b/src/quick/doc/snippets/pointerHandlers/pinchHandlerDifferentTarget.qml
index 211c370da6..a5255a64e3 100644
--- a/src/quick/doc/snippets/pointerHandlers/pinchHandlerDifferentTarget.qml
+++ b/src/quick/doc/snippets/pointerHandlers/pinchHandlerDifferentTarget.qml
@@ -1,12 +1,22 @@
 /****************************************************************************
 **
 ** Copyright (C) 2017 The Qt Company Ltd.
-** Contact: http://www.qt.io/licensing/
+** Contact: https://www.qt.io/licensing/
 **
 ** This file is part of the documentation of the Qt Toolkit.
 **
 ** $QT_BEGIN_LICENSE:BSD$
-** You may use this file under the terms of the BSD license as follows:
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** BSD License Usage
+** Alternatively, you may use this file under the terms of the BSD license
+** as follows:
 **
 ** "Redistribution and use in source and binary forms, with or without
 ** modification, are permitted provided that the following conditions are
diff --git a/src/quick/doc/snippets/pointerHandlers/pinchHandlerNullTarget.qml b/src/quick/doc/snippets/pointerHandlers/pinchHandlerNullTarget.qml
index b0139d7194..7d21efcb84 100644
--- a/src/quick/doc/snippets/pointerHandlers/pinchHandlerNullTarget.qml
+++ b/src/quick/doc/snippets/pointerHandlers/pinchHandlerNullTarget.qml
@@ -1,12 +1,22 @@
 /****************************************************************************
 **
 ** Copyright (C) 2017 The Qt Company Ltd.
-** Contact: http://www.qt.io/licensing/
+** Contact: https://www.qt.io/licensing/
 **
 ** This file is part of the documentation of the Qt Toolkit.
 **
 ** $QT_BEGIN_LICENSE:BSD$
-** You may use this file under the terms of the BSD license as follows:
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** BSD License Usage
+** Alternatively, you may use this file under the terms of the BSD license
+** as follows:
 **
 ** "Redistribution and use in source and binary forms, with or without
 ** modification, are permitted provided that the following conditions are
diff --git a/src/quick/doc/snippets/qml/path/arcrotation.qml b/src/quick/doc/snippets/qml/path/arcrotation.qml
index c73d67ff17..985ac51d8a 100644
--- a/src/quick/doc/snippets/qml/path/arcrotation.qml
+++ b/src/quick/doc/snippets/qml/path/arcrotation.qml
@@ -1,12 +1,22 @@
 /****************************************************************************
 **
 ** Copyright (C) 2016 The Qt Company Ltd.
-** Contact: http://www.qt.io/licensing/
+** Contact: https://www.qt.io/licensing/
 **
 ** This file is part of the documentation of the Qt Toolkit.
 **
 ** $QT_BEGIN_LICENSE:BSD$
-** You may use this file under the terms of the BSD license as follows:
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** BSD License Usage
+** Alternatively, you may use this file under the terms of the BSD license
+** as follows:
 **
 ** "Redistribution and use in source and binary forms, with or without
 ** modification, are permitted provided that the following conditions are
diff --git a/src/quick/handlers/handlers.pri b/src/quick/handlers/handlers.pri
index 9e32b9278c..8bd74d95da 100644
--- a/src/quick/handlers/handlers.pri
+++ b/src/quick/handlers/handlers.pri
@@ -5,6 +5,7 @@ HEADERS += \
     $$PWD/qquickpinchhandler_p.h \
     $$PWD/qquickpointerdevicehandler_p.h \
     $$PWD/qquickpointerhandler_p.h \
+    $$PWD/qquickpointhandler_p.h \
     $$PWD/qquicksinglepointhandler_p.h \
     $$PWD/qquicktaphandler_p.h \
 
@@ -15,6 +16,7 @@ SOURCES += \
     $$PWD/qquickpinchhandler.cpp \
     $$PWD/qquickpointerdevicehandler.cpp \
     $$PWD/qquickpointerhandler.cpp \
+    $$PWD/qquickpointhandler.cpp \
     $$PWD/qquicksinglepointhandler.cpp \
     $$PWD/qquicktaphandler.cpp \
 
diff --git a/src/quick/handlers/qquickhandlersmodule.cpp b/src/quick/handlers/qquickhandlersmodule.cpp
index 8472c6a062..c9e08fe4f2 100644
--- a/src/quick/handlers/qquickhandlersmodule.cpp
+++ b/src/quick/handlers/qquickhandlersmodule.cpp
@@ -41,6 +41,7 @@
 #include "qquickpointerhandler_p.h"
 #include "qquickdraghandler_p.h"
 #include "qquickpinchhandler_p.h"
+#include "qquickpointhandler_p.h"
 #include "qquicktaphandler_p.h"
 
 static void initResources()
@@ -82,6 +83,7 @@ static void qt_quickhandlers_defineModule(const char *uri, int major, int minor)
 
     qmlRegisterUncreatableType<QQuickPointerHandler>(uri,major,minor,"PointerHandler",
         QQuickPointerHandler::tr("PointerHandler is an abstract base class"));
+    qmlRegisterType<QQuickPointHandler>(uri,major,minor,"PointHandler");
     qmlRegisterType<QQuickDragHandler>(uri,major,minor,"DragHandler");
     qmlRegisterUncreatableType<QQuickDragAxis>(uri, major, minor, "DragAxis",
         QQuickDragHandler::tr("DragAxis is only available as a grouped property of DragHandler"));
diff --git a/src/quick/handlers/qquickmultipointhandler.cpp b/src/quick/handlers/qquickmultipointhandler.cpp
index ff4914394c..b126b93211 100644
--- a/src/quick/handlers/qquickmultipointhandler.cpp
+++ b/src/quick/handlers/qquickmultipointhandler.cpp
@@ -298,17 +298,18 @@ void QQuickMultiPointHandler::acceptPoints(const QVector<QQuickEventPoint *> &po
 
 bool QQuickMultiPointHandler::grabPoints(QVector<QQuickEventPoint *> points)
 {
-    bool canGrab = true;
+    bool allowed = true;
     for (QQuickEventPoint* point : points) {
-        auto grabber = point->grabberItem();
-        if (grabber && (grabber->keepMouseGrab() || grabber->keepTouchGrab()))
-            canGrab = false;
+        if (!canGrab(point)) {
+            allowed = false;
+            break;
+        }
     }
-    if (canGrab) {
+    if (allowed) {
         for (QQuickEventPoint* point : points)
             setExclusiveGrab(point);
     }
-    return canGrab;
+    return allowed;
 }
 
 QT_END_NAMESPACE
diff --git a/src/quick/handlers/qquickpinchhandler.cpp b/src/quick/handlers/qquickpinchhandler.cpp
index 84c4e912d1..4db96d8a99 100644
--- a/src/quick/handlers/qquickpinchhandler.cpp
+++ b/src/quick/handlers/qquickpinchhandler.cpp
@@ -349,13 +349,18 @@ void QQuickPinchHandler::handlePointerEventImpl(QQuickPointerEvent *event)
         }
     } else {
         bool containsReleasedPoints = event->isReleaseEvent();
-        if (!active() && !containsReleasedPoints) {
+        if (!active()) {
             // Verify that at least one of the points has moved beyond threshold needed to activate the handler
             for (QQuickEventPoint *point : qAsConst(m_currentPoints)) {
-                if (QQuickWindowPrivate::dragOverThreshold(point)) {
-                    if (grabPoints(m_currentPoints))
-                        setActive(true);
+                if (!containsReleasedPoints && QQuickWindowPrivate::dragOverThreshold(point) && grabPoints(m_currentPoints)) {
+                    setActive(true);
                     break;
+                } else {
+                    setPassiveGrab(point);
+                }
+                if (point->state() == QQuickEventPoint::Pressed) {
+                    point->setAccepted(false); // don't stop propagation
+                    setPassiveGrab(point);
                 }
             }
             if (!active())
diff --git a/src/quick/handlers/qquickpointerhandler.cpp b/src/quick/handlers/qquickpointerhandler.cpp
index faebdf3621..64bf1a8a8b 100644
--- a/src/quick/handlers/qquickpointerhandler.cpp
+++ b/src/quick/handlers/qquickpointerhandler.cpp
@@ -42,6 +42,7 @@
 QT_BEGIN_NAMESPACE
 
 Q_LOGGING_CATEGORY(lcPointerHandlerDispatch, "qt.quick.handler.dispatch")
+Q_LOGGING_CATEGORY(lcPointerHandlerGrab, "qt.quick.handler.grab")
 Q_LOGGING_CATEGORY(lcPointerHandlerActive, "qt.quick.handler.active")
 
 /*!
@@ -67,6 +68,7 @@ QQuickPointerHandler::QQuickPointerHandler(QObject *parent)
   , m_targetExplicitlySet(false)
   , m_hadKeepMouseGrab(false)
   , m_hadKeepTouchGrab(false)
+  , m_grabPermissions(CanTakeOverFromItems | CanTakeOverFromHandlersOfDifferentType | ApprovesTakeOverByAnything)
 {
 }
 
@@ -94,7 +96,7 @@ QQuickPointerHandler::~QQuickPointerHandler()
 */
 void QQuickPointerHandler::onGrabChanged(QQuickPointerHandler *grabber, QQuickEventPoint::GrabState stateChange, QQuickEventPoint *point)
 {
-    qCDebug(lcPointerHandlerDispatch) << point << stateChange << grabber;
+    qCDebug(lcPointerHandlerGrab) << point << stateChange << grabber;
     Q_ASSERT(point);
     if (grabber == this) {
         bool wasCanceled = false;
@@ -145,7 +147,7 @@ void QQuickPointerHandler::onGrabChanged(QQuickPointerHandler *grabber, QQuickEv
 */
 void QQuickPointerHandler::setPassiveGrab(QQuickEventPoint *point, bool grab)
 {
-    qCDebug(lcPointerHandlerDispatch) << point << grab;
+    qCDebug(lcPointerHandlerGrab) << point << grab;
     if (grab) {
         point->setGrabberPointerHandler(this, false);
     } else {
@@ -153,14 +155,124 @@ void QQuickPointerHandler::setPassiveGrab(QQuickEventPoint *point, bool grab)
     }
 }
 
-void QQuickPointerHandler::setExclusiveGrab(QQuickEventPoint *point, bool grab)
+/*!
+    Check whether it's OK to take an exclusive grab of the \a point.
+
+    The default implementation will call approveGrabTransition() to check this
+    handler's \l grabPermissions. If grabbing can be done only by taking over
+    the exclusive grab from an Item, approveGrabTransition() checks the Item's
+    \l keepMouseGrab or \l keepTouchGrab flags appropriately. If grabbing can
+    be done only by taking over another handler's exclusive grab, canGrab()
+    also calls approveGrabTransition() on the handler which is about to lose
+    its grab. Either one can deny the takeover.
+*/
+bool QQuickPointerHandler::canGrab(QQuickEventPoint *point)
 {
-    // TODO m_hadKeepMouseGrab m_hadKeepTouchGrab
-    qCDebug(lcPointerHandlerDispatch) << point << grab;
-    // Don't allow one handler to cancel another's grab, unless it is stealing it for itself
-    if (!grab && point->grabberPointerHandler() != this)
+    QQuickPointerHandler *existingPhGrabber = point->grabberPointerHandler();
+    return approveGrabTransition(point, this) &&
+        (existingPhGrabber ? existingPhGrabber->approveGrabTransition(point, this) : true);
+}
+
+/*!
+    Check this handler's rules to see if \l proposedGrabber will be allowed to take
+    the exclusive grab.  This function may be called twice: once on the instance which
+    will take the grab, and once on the instance which would thereby lose its grab,
+    in case of a takeover scenario.
+*/
+bool QQuickPointerHandler::approveGrabTransition(QQuickEventPoint *point, QObject *proposedGrabber)
+{
+    bool allowed = false;
+    if (proposedGrabber == this) {
+        QObject* existingGrabber = point->exclusiveGrabber();
+        allowed = (existingGrabber == nullptr) || ((m_grabPermissions & CanTakeOverFromAnything) == CanTakeOverFromAnything);
+        if (existingGrabber) {
+            if (QQuickPointerHandler *existingPhGrabber = point->grabberPointerHandler()) {
+                if (!allowed && (m_grabPermissions & CanTakeOverFromHandlersOfDifferentType) &&
+                        existingPhGrabber->metaObject()->className() != metaObject()->className())
+                    allowed = true;
+                if (!allowed && (m_grabPermissions & CanTakeOverFromHandlersOfSameType) &&
+                        existingPhGrabber->metaObject()->className() == metaObject()->className())
+                    allowed = true;
+            } else if ((m_grabPermissions & CanTakeOverFromItems)) {
+                QQuickItem * existingItemGrabber = point->grabberItem();
+                if (existingItemGrabber && !((existingItemGrabber->keepMouseGrab() && point->pointerEvent()->asPointerMouseEvent()) ||
+                                             (existingItemGrabber->keepTouchGrab() && point->pointerEvent()->asPointerTouchEvent())))
+                    allowed = true;
+            }
+        }
+    } else {
+        // proposedGrabber is different: that means this instance will lose its grab
+        if (proposedGrabber) {
+            if ((m_grabPermissions & ApprovesTakeOverByAnything) == ApprovesTakeOverByAnything)
+                allowed = true;
+            if (!allowed && (m_grabPermissions & ApprovesTakeOverByHandlersOfDifferentType) &&
+                    proposedGrabber->metaObject()->className() != metaObject()->className())
+                allowed = true;
+            if (!allowed && (m_grabPermissions & ApprovesTakeOverByHandlersOfSameType) &&
+                    proposedGrabber->metaObject()->className() == metaObject()->className())
+                allowed = true;
+            if (!allowed && (m_grabPermissions & ApprovesTakeOverByItems) && proposedGrabber->inherits("QQuickItem"))
+                allowed = true;
+        } else {
+            if (!allowed && (m_grabPermissions & ApprovesCancellation))
+                allowed = true;
+        }
+    }
+    qCDebug(lcPointerHandlerGrab) << "point" << hex << point->pointId() << "permission" <<
+            QMetaEnum::fromType<GrabPermissions>().valueToKeys(grabPermissions()) <<
+            ':' << this << (allowed ? "approved to" : "denied to") << proposedGrabber;
+    return allowed;
+}
+
+/*!
+    \qmlproperty bool QtQuick::PointerHandler::grabPermission
+
+    This property specifies the permissions when this handler's logic decides
+    to take over the exclusive grab, or when it is asked to approve grab
+    takeover or cancellation by another handler.
+
+    The default is
+    \c {CanTakeOverFromItems | CanTakeOverFromHandlersOfDifferentType | ApprovesTakeOverByAnything}
+    which allows most takeover scenarios but avoids e.g. two PinchHandlers fighting
+    over the same touchpoints.
+*/
+void QQuickPointerHandler::setGrabPermissions(GrabPermissions grabPermission)
+{
+    if (m_grabPermissions == grabPermission)
         return;
-    point->setGrabberPointerHandler(grab ? this : nullptr, true);
+
+    m_grabPermissions = grabPermission;
+    emit grabPermissionChanged();
+}
+
+/*!
+    \internal
+    Acquire or give up the exclusive grab of the given \a point, according to
+    the \a grab state, and subject to the rules: canGrab(), and the rule not to
+    relinquish another handler's grab. Returns true if permission is granted,
+    or if the exclusive grab has already been acquired or relinquished as
+    specified. Returns false if permission is denied either by this handler or
+    by the handler or item from which this handler would take over
+*/
+bool QQuickPointerHandler::setExclusiveGrab(QQuickEventPoint *point, bool grab)
+{
+    if ((grab && point->exclusiveGrabber() == this) || (!grab && point->exclusiveGrabber() != this))
+        return true;
+    // TODO m_hadKeepMouseGrab m_hadKeepTouchGrab
+    bool allowed = true;
+    if (grab) {
+        allowed = canGrab(point);
+    } else {
+        QQuickPointerHandler *existingPhGrabber = point->grabberPointerHandler();
+        // Ask before allowing one handler to cancel another's grab
+        if (existingPhGrabber && existingPhGrabber != this && !existingPhGrabber->approveGrabTransition(point, nullptr))
+            allowed = false;
+    }
+    qCDebug(lcPointerHandlerGrab) << point << (grab ? "grab" : "ungrab") << (allowed ? "allowed" : "forbidden") <<
+        point->exclusiveGrabber() << "->" << (grab ? this : nullptr);
+    if (allowed)
+        point->setGrabberPointerHandler(grab ? this : nullptr, true);
+    return allowed;
 }
 
 /*!
@@ -169,7 +281,7 @@ void QQuickPointerHandler::setExclusiveGrab(QQuickEventPoint *point, bool grab)
 */
 void QQuickPointerHandler::cancelAllGrabs(QQuickEventPoint *point)
 {
-    qCDebug(lcPointerHandlerDispatch) << point;
+    qCDebug(lcPointerHandlerGrab) << point;
     point->cancelAllGrabs(this);
 }
 
diff --git a/src/quick/handlers/qquickpointerhandler_p.h b/src/quick/handlers/qquickpointerhandler_p.h
index 24a058275d..9a77dd714a 100644
--- a/src/quick/handlers/qquickpointerhandler_p.h
+++ b/src/quick/handlers/qquickpointerhandler_p.h
@@ -67,11 +67,27 @@ class Q_QUICK_PRIVATE_EXPORT QQuickPointerHandler : public QObject
     Q_PROPERTY(bool active READ active NOTIFY activeChanged)
     Q_PROPERTY(QQuickItem * target READ target WRITE setTarget NOTIFY targetChanged)
     Q_PROPERTY(QQuickItem * parent READ parentItem CONSTANT)
+    Q_PROPERTY(GrabPermissions grabPermissions READ grabPermissions WRITE setGrabPermissions NOTIFY grabPermissionChanged)
 
 public:
     explicit QQuickPointerHandler(QObject *parent = 0);
     virtual ~QQuickPointerHandler();
 
+    enum GrabPermission {
+        TakeOverForbidden = 0x0,
+        CanTakeOverFromHandlersOfSameType = 0x01,
+        CanTakeOverFromHandlersOfDifferentType= 0x02,
+        CanTakeOverFromItems = 0x04,
+        CanTakeOverFromAnything = 0x0F,
+        ApprovesTakeOverByHandlersOfSameType = 0x10,
+        ApprovesTakeOverByHandlersOfDifferentType= 0x20,
+        ApprovesTakeOverByItems = 0x40,
+        ApprovesCancellation = 0x80,
+        ApprovesTakeOverByAnything = 0xF0
+    };
+    Q_DECLARE_FLAGS(GrabPermissions, GrabPermission)
+    Q_FLAG(GrabPermissions)
+
 public:
     bool enabled() const { return m_enabled; }
     void setEnabled(bool enabled);
@@ -85,11 +101,15 @@ public:
 
     void handlePointerEvent(QQuickPointerEvent *event);
 
+    GrabPermissions grabPermissions() const { return static_cast<GrabPermissions>(m_grabPermissions); }
+    void setGrabPermissions(GrabPermissions grabPermissions);
+
 Q_SIGNALS:
     void enabledChanged();
     void activeChanged();
     void targetChanged();
     void grabChanged(QQuickEventPoint *point);
+    void grabPermissionChanged();
     void canceled(QQuickEventPoint *point);
 
 protected:
@@ -99,8 +119,10 @@ protected:
     void setActive(bool active);
     virtual void onActiveChanged() { }
     virtual void onGrabChanged(QQuickPointerHandler *grabber, QQuickEventPoint::GrabState stateChange, QQuickEventPoint *point);
+    virtual bool canGrab(QQuickEventPoint *point);
+    virtual bool approveGrabTransition(QQuickEventPoint *point, QObject *proposedGrabber);
     void setPassiveGrab(QQuickEventPoint *point, bool grab = true);
-    void setExclusiveGrab(QQuickEventPoint *point, bool grab = true);
+    bool setExclusiveGrab(QQuickEventPoint *point, bool grab = true);
     void cancelAllGrabs(QQuickEventPoint *point);
     QPointF eventPos(const QQuickEventPoint *point) const;
     bool parentContains(const QQuickEventPoint *point) const;
@@ -113,11 +135,15 @@ private:
     bool m_targetExplicitlySet : 1;
     bool m_hadKeepMouseGrab : 1;    // some handlers override target()->setKeepMouseGrab(); this remembers previous state
     bool m_hadKeepTouchGrab : 1;    // some handlers override target()->setKeepTouchGrab(); this remembers previous state
+    uint m_reserved : 19;
+    uint8_t m_grabPermissions : 8;
 
     friend class QQuickEventPoint;
     friend class QQuickWindowPrivate;
 };
 
+Q_DECLARE_OPERATORS_FOR_FLAGS(QQuickPointerHandler::GrabPermissions)
+
 QT_END_NAMESPACE
 
 QML_DECLARE_TYPE(QQuickPointerHandler)
diff --git a/src/quick/handlers/qquickpointhandler.cpp b/src/quick/handlers/qquickpointhandler.cpp
new file mode 100644
index 0000000000..d40837c43e
--- /dev/null
+++ b/src/quick/handlers/qquickpointhandler.cpp
@@ -0,0 +1,134 @@
+/****************************************************************************
+**
+** Copyright (C) 2017 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the QtQuick module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or (at your option) the GNU General
+** Public license version 3 or any later version approved by the KDE Free
+** Qt Foundation. The licenses are as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-2.0.html and
+** https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qquickpointhandler_p.h"
+#include <private/qquickwindow_p.h>
+#include <QDebug>
+
+QT_BEGIN_NAMESPACE
+
+/*!
+    \qmltype PointHandler
+    \instantiates QQuickPointHandler
+    \inqmlmodule QtQuick
+    \ingroup qtquick-handlers
+    \brief Handler for reacting to a single touchpoint
+
+    PointHandler can be used to show feedback about a touchpoint or the mouse
+    position, or to otherwise react to pointer events. By being only a passive
+    grabber, it has the ability to keep oversight of all movements, and its
+    grab cannot be stolen even when other gestures are detected and exclusive
+    grabs occur.
+
+    If your goal is orthogonal surveillance of eventpoints, an older
+    alternative was QObject::installEventFilter(), but that has never been a
+    built-in QtQuick feature: it requires a custom C++ QQuickItem subclass.
+    PointHandler is more efficient than that, because only pointer events will
+    be delivered to it, during the course of normal event delivery in
+    QQuickWindow, whereas an event filter needs to filter all events of all
+    types, and thus sets itself up as a potential event delivery bottleneck.
+
+    One possible use case is to add this handler to a transparent Item which is
+    on top of the rest of the scene, so that when a point is freshly pressed,
+    it will be delivered to that Item and its handlers first, providing the
+    opportunity to take the passive grab as early as possible. Then such an
+    item (like a pane of glass over the whole UI) also becomes a good parent
+    for other Items which visualize the kind of reactive feedback which must
+    always be on top; and likewise it can be the parent for popups, popovers,
+    dialogs and so on. For example, a declared Window can have an Item with a
+    high Z value so that it stays on top. It can also be helpful for your
+    main.cpp to use QQmlContext::setContextProperty() to make the "glass pane"
+    accessible by ID to the entire UI, so that other Items and PointHandlers
+    can be reparented to it.
+
+    Inside a PointHandler you can declare a \l target Item, but PointHandler
+    will not automatically manipulate it in any way. The target Item can bind to
+    properties of the PointHandler. In this way it can follow a point's movements.
+
+    \sa MultiPointTouchArea
+*/
+
+QQuickPointHandler::QQuickPointHandler(QObject *parent)
+    : QQuickSinglePointHandler(parent)
+{
+    setIgnoreAdditionalPoints();
+}
+
+QQuickPointHandler::~QQuickPointHandler()
+{
+}
+
+bool QQuickPointHandler::wantsEventPoint(QQuickEventPoint *pt)
+{
+    // On press, we want it unless a sibling of the same type also does.
+    if (pt->state() == QQuickEventPoint::Pressed && QQuickSinglePointHandler::wantsEventPoint(pt)) {
+        for (const QQuickPointerHandler *grabber : pt->passiveGrabbers()) {
+            if (grabber && grabber->parent() == parent() &&
+                    grabber->metaObject()->className() == metaObject()->className())
+                return false;
+        }
+        return true;
+    }
+    // If we've already been interested in a point, stay interested, even if it has strayed outside bounds.
+    return (pt->state() != QQuickEventPoint::Pressed && point().id() == pt->pointId());
+}
+
+void QQuickPointHandler::handleEventPoint(QQuickEventPoint *point)
+{
+    switch (point->state()) {
+    case QQuickEventPoint::Pressed:
+        setPassiveGrab(point);
+        setActive(true);
+        break;
+    case QQuickEventPoint::Released:
+        setActive(false);
+        break;
+    default:
+        break;
+    }
+    point->setAccepted(false); // Just lurking... don't interfere with propagation
+    emit translationChanged();
+}
+
+QVector2D QQuickPointHandler::translation() const
+{
+    return QVector2D(point().position() - point().pressPosition());
+}
+
+QT_END_NAMESPACE
diff --git a/src/quick/handlers/qquickpointhandler_p.h b/src/quick/handlers/qquickpointhandler_p.h
new file mode 100644
index 0000000000..5babab0c4d
--- /dev/null
+++ b/src/quick/handlers/qquickpointhandler_p.h
@@ -0,0 +1,81 @@
+/****************************************************************************
+**
+** Copyright (C) 2017 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the QtQuick module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or (at your option) the GNU General
+** Public license version 3 or any later version approved by the KDE Free
+** Qt Foundation. The licenses are as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-2.0.html and
+** https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QQUICKPONTHANDLER_H
+#define QQUICKPONTHANDLER_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include "qquicksinglepointhandler_p.h"
+
+QT_BEGIN_NAMESPACE
+
+class Q_AUTOTEST_EXPORT QQuickPointHandler : public QQuickSinglePointHandler
+{
+    Q_OBJECT
+    Q_PROPERTY(QVector2D translation READ translation NOTIFY translationChanged)
+
+public:
+    explicit QQuickPointHandler(QObject *parent = 0);
+    ~QQuickPointHandler();
+
+    QVector2D translation() const;
+
+Q_SIGNALS:
+    void translationChanged();
+
+protected:
+    bool wantsEventPoint(QQuickEventPoint *pt) override;
+    void handleEventPoint(QQuickEventPoint *point) override;
+};
+
+QT_END_NAMESPACE
+
+QML_DECLARE_TYPE(QQuickPointHandler)
+
+#endif // QQUICKPONTHANDLER_H
diff --git a/src/quick/items/qquickevents.cpp b/src/quick/items/qquickevents.cpp
index 8653d758de..4a786d5569 100644
--- a/src/quick/items/qquickevents.cpp
+++ b/src/quick/items/qquickevents.cpp
@@ -790,17 +790,19 @@ QQuickItem *QQuickEventPoint::grabberItem() const
 void QQuickEventPoint::setGrabberItem(QQuickItem *grabber)
 {
     if (grabber != m_exclusiveGrabber.data()) {
+        QQuickPointerHandler *oldGrabberHandler = grabberPointerHandler();
+        if (oldGrabberHandler && !oldGrabberHandler->approveGrabTransition(this, grabber))
+            return;
         if (Q_UNLIKELY(lcPointerGrab().isDebugEnabled())) {
             qCDebug(lcPointerGrab) << pointDeviceName(this) << "point" << hex << m_pointId << pointStateString(this)
                                    << ": grab" << m_exclusiveGrabber << "->" << grabber;
         }
-        QQuickPointerHandler *oldGrabberHandler = grabberPointerHandler();
-        QQuickItem *oldGrabberItem = grabberItem();
         m_exclusiveGrabber = QPointer<QObject>(grabber);
         m_grabberIsHandler = false;
         m_sceneGrabPos = m_scenePos;
+        QQuickItem *oldGrabberItem = grabberItem();
         if (oldGrabberHandler)
-            oldGrabberHandler->onGrabChanged(oldGrabberHandler, CancelGrabExclusive, this);
+            oldGrabberHandler->onGrabChanged(oldGrabberHandler, (grabber ? CancelGrabExclusive : UngrabExclusive), this);
         else if (oldGrabberItem && oldGrabberItem != grabber && grabber && pointerEvent()->asPointerTouchEvent())
             oldGrabberItem->touchUngrabEvent();
         for (QPointer<QQuickPointerHandler> passiveGrabber : m_passiveGrabbers)
@@ -837,26 +839,24 @@ void QQuickEventPoint::setGrabberPointerHandler(QQuickPointerHandler *grabber, b
     }
     if (exclusive) {
         if (grabber != m_exclusiveGrabber.data()) {
+            QQuickPointerHandler *oldGrabberHandler = grabberPointerHandler();
+            QQuickItem *oldGrabberItem = grabberItem();
+            m_exclusiveGrabber = QPointer<QObject>(grabber);
+            m_grabberIsHandler = true;
+            m_sceneGrabPos = m_scenePos;
             if (grabber) {
-                // set variables before notifying the new grabber
-                m_exclusiveGrabber = QPointer<QObject>(grabber);
-                m_grabberIsHandler = true;
-                m_sceneGrabPos = m_scenePos;
                 grabber->onGrabChanged(grabber, GrabExclusive, this);
                 for (QPointer<QQuickPointerHandler> passiveGrabber : m_passiveGrabbers) {
                     if (passiveGrabber != grabber)
                         passiveGrabber->onGrabChanged(grabber, OverrideGrabPassive, this);
                 }
-            } else if (QQuickPointerHandler *oldGrabberPointerHandler = qmlobject_cast<QQuickPointerHandler *>(m_exclusiveGrabber.data())) {
-                oldGrabberPointerHandler->onGrabChanged(oldGrabberPointerHandler, UngrabExclusive, this);
-            } else if (!m_exclusiveGrabber.isNull()) {
-                // If there is a previous grabber and it's not a PointerHandler, it must be an Item.
-                QQuickItem *oldGrabberItem = static_cast<QQuickItem *>(m_exclusiveGrabber.data());
-                // If this point came from a touchscreen, notify that previous grabber Item that it's losing its touch grab.
-                if (pointerEvent()->asPointerTouchEvent())
-                    oldGrabberItem->touchUngrabEvent();
             }
-            // set variables after notifying the old grabber
+            if (oldGrabberHandler)
+                oldGrabberHandler->onGrabChanged(oldGrabberHandler, (grabber ? CancelGrabExclusive : UngrabExclusive), this);
+            else if (oldGrabberItem && pointerEvent()->asPointerTouchEvent())
+                oldGrabberItem->touchUngrabEvent();
+            // touchUngrabEvent() can result in the grabber being set to null (MPTA does that, for example).
+            // So set it again to ensure that final state is what we want.
             m_exclusiveGrabber = QPointer<QObject>(grabber);
             m_grabberIsHandler = true;
             m_sceneGrabPos = m_scenePos;
diff --git a/src/quick/items/qquickevents_p_p.h b/src/quick/items/qquickevents_p_p.h
index 09a63febdc..af5857cf63 100644
--- a/src/quick/items/qquickevents_p_p.h
+++ b/src/quick/items/qquickevents_p_p.h
@@ -306,7 +306,6 @@ public:
     void setExclusiveGrabber(QObject *exclusiveGrabber);
 
     QQuickItem *grabberItem() const;
-    Q_DECL_DEPRECATED QQuickItem *grabber() const { return grabberItem(); }
     void setGrabberItem(QQuickItem *exclusiveGrabber);
 
     QQuickPointerHandler *grabberPointerHandler() const;
diff --git a/src/quick/items/qquickflickable.cpp b/src/quick/items/qquickflickable.cpp
index 2f639af790..ae5bdc3083 100644
--- a/src/quick/items/qquickflickable.cpp
+++ b/src/quick/items/qquickflickable.cpp
@@ -725,7 +725,19 @@ QQuickFlickable::~QQuickFlickable()
 
     These properties hold the surface coordinate currently at the top-left
     corner of the Flickable. For example, if you flick an image up 100 pixels,
-    \c contentY will be 100.
+    \c contentY will increase by 100.
+
+    \note If you flick back to the origin (the top-left corner), after the
+    rebound animation, \c contentX will settle to the same value as \c originX,
+    and \c contentY to \c originY. These are usually (0,0), however ListView
+    and GridView may have an arbitrary origin due to delegate size variation,
+    or item insertion/removal outside the visible region. So if you want to
+    implement something like a vertical scrollbar, one way is to use
+    \c {y: (contentY - originY) * (height / contentHeight)}
+    for the position; another way is to use the normalized values in
+    \l {QtQuick::Flickable::visibleArea}{visibleArea}.
+
+    \sa originX, originY
 */
 qreal QQuickFlickable::contentX() const
 {
@@ -2152,6 +2164,8 @@ void QQuickFlickable::setRightMargin(qreal m)
     This is usually (0,0), however ListView and GridView may have an arbitrary
     origin due to delegate size variation, or item insertion/removal outside
     the visible region.
+
+    \sa contentX, contentY
 */
 
 qreal QQuickFlickable::originY() const
diff --git a/src/quick/items/qquickitemview.cpp b/src/quick/items/qquickitemview.cpp
index 478499e209..c203f389ae 100644
--- a/src/quick/items/qquickitemview.cpp
+++ b/src/quick/items/qquickitemview.cpp
@@ -952,11 +952,16 @@ void QQuickItemViewPrivate::positionViewAtIndex(int index, int mode)
         item = visibleItem(idx);
     }
     if (item) {
+        const bool stickyHeader = hasStickyHeader();
+        const bool stickyFooter = hasStickyFooter();
+        const qreal stickyHeaderSize = stickyHeader ? headerSize() : 0;
+        const qreal stickyFooterSize = stickyFooter ? footerSize() : 0;
+
         const qreal itemPos = item->position();
         switch (mode) {
         case QQuickItemView::Beginning:
             pos = itemPos;
-            if (header && (index < 0 || hasStickyHeader()))
+            if (header && (index < 0 || stickyHeader))
                 pos -= headerSize();
             break;
         case QQuickItemView::Center:
@@ -964,23 +969,23 @@ void QQuickItemViewPrivate::positionViewAtIndex(int index, int mode)
             break;
         case QQuickItemView::End:
             pos = itemPos - viewSize + item->size();
-            if (footer && (index >= modelCount || hasStickyFooter()))
+            if (footer && (index >= modelCount || stickyFooter))
                 pos += footerSize();
             break;
         case QQuickItemView::Visible:
-            if (itemPos > pos + viewSize)
-                pos = itemPos - viewSize + item->size();
-            else if (item->endPosition() <= pos)
-                pos = itemPos;
+            if (itemPos > pos + viewSize - stickyFooterSize)
+                pos = item->endPosition() - viewSize + stickyFooterSize;
+            else if (item->endPosition() <= pos - stickyHeaderSize)
+                pos = itemPos - stickyHeaderSize;
             break;
         case QQuickItemView::Contain:
-            if (item->endPosition() >= pos + viewSize)
-                pos = itemPos - viewSize + item->size();
-            if (itemPos < pos)
-                pos = itemPos;
+            if (item->endPosition() >= pos + viewSize + stickyFooterSize)
+                pos = itemPos - viewSize + item->size() + stickyFooterSize;
+            if (itemPos - stickyHeaderSize < pos)
+                pos = itemPos - stickyHeaderSize;
             break;
         case QQuickItemView::SnapPosition:
-            pos = itemPos - highlightRangeStart;
+            pos = itemPos - highlightRangeStart - stickyHeaderSize;
             break;
         }
         pos = qMin(pos, maxExtent);
diff --git a/src/quick/items/qquickopenglshadereffect.cpp b/src/quick/items/qquickopenglshadereffect.cpp
index c3e0ba05bd..94a5b6a646 100644
--- a/src/quick/items/qquickopenglshadereffect.cpp
+++ b/src/quick/items/qquickopenglshadereffect.cpp
@@ -896,7 +896,7 @@ QSGNode *QQuickOpenGLShaderEffect::handleUpdatePaintNode(QSGNode *oldNode, QQuic
     bool geometryUsesTextureSubRect = false;
     if (m_supportsAtlasTextures && material->textureProviders.size() == 1) {
         QSGTextureProvider *provider = material->textureProviders.at(0);
-        if (provider->texture()) {
+        if (provider && provider->texture()) {
             srcRect = provider->texture()->normalizedTextureSubRect();
             geometryUsesTextureSubRect = true;
         }
diff --git a/src/quick/items/qquickwindow.cpp b/src/quick/items/qquickwindow.cpp
index 143c76cb1b..e865a609a6 100644
--- a/src/quick/items/qquickwindow.cpp
+++ b/src/quick/items/qquickwindow.cpp
@@ -768,16 +768,12 @@ void QQuickWindowPrivate::setMouseGrabber(QQuickItem *grabber)
                     pt->cancelExclusiveGrab();
             }
             point->setGrabberItem(grabber);
-            for (auto handler : point->passiveGrabbers())
-                point->cancelPassiveGrab(handler);
         }
     } else {
         QQuickPointerEvent *event = pointerEventInstance(QQuickPointerDevice::genericMouseDevice());
         Q_ASSERT(event->pointCount() == 1);
         auto point = event->point(0);
         point->setGrabberItem(grabber);
-        for (auto handler : point->passiveGrabbers())
-            point->cancelPassiveGrab(handler);
     }
 
 
@@ -843,11 +839,12 @@ void QQuickWindowPrivate::removeGrabber(QQuickItem *grabber, bool mouse, bool to
         bool ungrab = false;
         const auto touchDevices = QQuickPointerDevice::touchDevices();
         for (auto device : touchDevices) {
-            auto pointerEvent = pointerEventInstance(device);
-            for (int i = 0; i < pointerEvent->pointCount(); ++i) {
-                if (pointerEvent->point(i)->exclusiveGrabber() == grabber) {
-                    pointerEvent->point(i)->setGrabberItem(nullptr);
-                    ungrab = true;
+            if (auto pointerEvent = queryPointerEventInstance(device)) {
+                for (int i = 0; i < pointerEvent->pointCount(); ++i) {
+                    if (pointerEvent->point(i)->exclusiveGrabber() == grabber) {
+                        pointerEvent->point(i)->setGrabberItem(nullptr);
+                        ungrab = true;
+                    }
                 }
             }
         }
@@ -1312,6 +1309,8 @@ QQuickWindow::~QQuickWindow()
     delete d->dragGrabber; d->dragGrabber = 0;
 #endif
     delete d->contentItem; d->contentItem = 0;
+    qDeleteAll(d->pointerEventInstances);
+    d->pointerEventInstances.clear();
 
     d->renderJobMutex.lock();
     qDeleteAll(d->beforeSynchronizingJobs);
@@ -1513,14 +1512,15 @@ QQuickItem *QQuickWindow::mouseGrabberItem() const
     Q_D(const QQuickWindow);
 
     if (d->touchMouseId != -1 && d->touchMouseDevice) {
-        QQuickPointerEvent *event = d->pointerEventInstance(d->touchMouseDevice);
-        auto point = event->pointById(d->touchMouseId);
-        return point ? point->grabberItem() : nullptr;
+        if (QQuickPointerEvent *event = d->queryPointerEventInstance(d->touchMouseDevice)) {
+            auto point = event->pointById(d->touchMouseId);
+            return point ? point->grabberItem() : nullptr;
+        }
+    } else if (QQuickPointerEvent *event = d->queryPointerEventInstance(QQuickPointerDevice::genericMouseDevice())) {
+        Q_ASSERT(event->pointCount());
+        return event->point(0)->grabberItem();
     }
-
-    QQuickPointerEvent *event = d->pointerEventInstance(QQuickPointerDevice::genericMouseDevice());
-    Q_ASSERT(event->pointCount());
-    return event->point(0)->grabberItem();
+    return nullptr;
 }
 
 
@@ -1694,8 +1694,10 @@ void QQuickWindowPrivate::deliverToPassiveGrabbers(const QVector<QPointer <QQuic
                 alreadyFiltered = sendFilteredPointerEvent(pointerEvent, par);
                 sendFilteredPointerEventResult << qMakePair<QQuickItem*, bool>(par, alreadyFiltered);
             }
-            if (!alreadyFiltered)
+            if (!alreadyFiltered) {
+                pointerEvent->localize(handler->parentItem());
                 handler->handlePointerEvent(pointerEvent);
+            }
         }
     }
 }
@@ -1741,6 +1743,7 @@ void QQuickWindowPrivate::deliverMouseEvent(QQuickPointerMouseEvent *pointerEven
             if (mouseIsReleased)
                 point->setGrabberPointerHandler(nullptr, true);
         }
+        deliverToPassiveGrabbers(point->passiveGrabbers(), pointerEvent);
     } else {
         bool delivered = false;
         if (pointerEvent->isPressEvent()) {
@@ -2204,7 +2207,7 @@ void QQuickWindowPrivate::flushFrameSynchronousEvents()
     }
 }
 
-QQuickPointerEvent *QQuickWindowPrivate::pointerEventInstance(QQuickPointerDevice *device, QEvent::Type eventType) const
+QQuickPointerEvent *QQuickWindowPrivate::queryPointerEventInstance(QQuickPointerDevice *device, QEvent::Type eventType) const
 {
     // Search for a matching reusable event object.
     for (QQuickPointerEvent *e : pointerEventInstances) {
@@ -2217,9 +2220,14 @@ QQuickPointerEvent *QQuickWindowPrivate::pointerEventInstance(QQuickPointerDevic
         if (e->device() == device)
             return e;
     }
+    return nullptr;
+}
 
-    // Not found: we have to create a suitable event instance.
-    QQuickPointerEvent *ev = nullptr;
+QQuickPointerEvent *QQuickWindowPrivate::pointerEventInstance(QQuickPointerDevice *device, QEvent::Type eventType) const
+{
+    QQuickPointerEvent *ev = queryPointerEventInstance(device, eventType);
+    if (ev)
+        return ev;
     QQuickWindow *q = const_cast<QQuickWindow*>(q_func());
     switch (device->type()) {
     case QQuickPointerDevice::Mouse:
@@ -2401,6 +2409,7 @@ void QQuickWindowPrivate::deliverTouchEvent(QQuickPointerTouchEvent *event)
 // Deliver touch points to existing grabbers
 void QQuickWindowPrivate::deliverUpdatedTouchPoints(QQuickPointerTouchEvent *event)
 {
+    bool done = false;
     const auto grabbers = event->exclusiveGrabbers();
     for (auto grabber : grabbers) {
         // The grabber is guaranteed to be either an item or a handler.
@@ -2410,52 +2419,52 @@ void QQuickWindowPrivate::deliverUpdatedTouchPoints(QQuickPointerTouchEvent *eve
             QQuickPointerHandler *handler = static_cast<QQuickPointerHandler *>(grabber);
             receiver = static_cast<QQuickPointerHandler *>(grabber)->parentItem();
             if (sendFilteredPointerEvent(event, receiver))
-                return;
+                done = true;
             event->localize(receiver);
             handler->handlePointerEvent(event);
             if (event->allPointsAccepted())
-                return;
+                done = true;
         }
+        if (done)
+            break;
         // If the grabber is an item or the grabbing handler didn't handle it,
         // then deliver the event to the item (which may have multiple handlers).
         deliverMatchingPointsToItem(receiver, event);
     }
 
-    // If some points weren't grabbed, deliver only to non-grabber PointerHandlers
-    if (!event->allPointsGrabbed()) {
-        int pointCount = event->pointCount();
+    // Deliver to each eventpoint's passive grabbers (but don't visit any handler more than once)
+    int pointCount = event->pointCount();
+    for (int i = 0; i < pointCount; ++i) {
+        QQuickEventPoint *point = event->point(i);
+        deliverToPassiveGrabbers(point->passiveGrabbers(), event);
+    }
+
+    if (done)
+        return;
 
-        // Deliver to each eventpoint's passive grabbers (but don't visit any handler more than once)
+    // If some points weren't grabbed, deliver only to non-grabber PointerHandlers in reverse paint order
+    if (!event->allPointsGrabbed()) {
+        QVector<QQuickItem *> targetItems;
         for (int i = 0; i < pointCount; ++i) {
             QQuickEventPoint *point = event->point(i);
-            deliverToPassiveGrabbers(point->passiveGrabbers(), event);
-        }
-
-        // If some points weren't grabbed, deliver to non-grabber PointerHandlers in reverse paint order
-        if (!event->allPointsGrabbed()) {
-            QVector<QQuickItem *> targetItems;
-            for (int i = 0; i < pointCount; ++i) {
-                QQuickEventPoint *point = event->point(i);
-                if (point->state() == QQuickEventPoint::Pressed)
-                    continue; // presses were delivered earlier; not the responsibility of deliverUpdatedTouchPoints
-                QVector<QQuickItem *> targetItemsForPoint = pointerTargets(contentItem, point->scenePosition(), false, false);
-                if (targetItems.count()) {
-                    targetItems = mergePointerTargets(targetItems, targetItemsForPoint);
-                } else {
-                    targetItems = targetItemsForPoint;
-                }
-            }
-
-            for (QQuickItem *item: targetItems) {
-                if (grabbers.contains(item))
-                    continue;
-                QQuickItemPrivate *itemPrivate = QQuickItemPrivate::get(item);
-                event->localize(item);
-                itemPrivate->handlePointerEvent(event, true); // avoid re-delivering to grabbers
-                if (event->allPointsGrabbed())
-                    break;
+            if (point->state() == QQuickEventPoint::Pressed)
+                continue; // presses were delivered earlier; not the responsibility of deliverUpdatedTouchPoints
+            QVector<QQuickItem *> targetItemsForPoint = pointerTargets(contentItem, point->scenePosition(), false, false);
+            if (targetItems.count()) {
+                targetItems = mergePointerTargets(targetItems, targetItemsForPoint);
+            } else {
+                targetItems = targetItemsForPoint;
             }
         }
+        for (QQuickItem *item : targetItems) {
+            if (grabbers.contains(item))
+                continue;
+            QQuickItemPrivate *itemPrivate = QQuickItemPrivate::get(item);
+            event->localize(item);
+            itemPrivate->handlePointerEvent(event, true); // avoid re-delivering to grabbers
+            if (event->allPointsGrabbed())
+                break;
+        }
     }
 }
 
@@ -2494,7 +2503,7 @@ bool QQuickWindowPrivate::deliverPressOrReleaseEvent(QQuickPointerEvent *event,
             continue;
         deliverMatchingPointsToItem(item, event, handlersOnly);
         if (event->allPointsAccepted())
-            break;
+            handlersOnly = true;
     }
 
     return event->allPointsAccepted();
@@ -2509,8 +2518,9 @@ void QQuickWindowPrivate::deliverMatchingPointsToItem(QQuickItem *item, QQuickPo
     // Let the Item's handlers (if any) have the event first.
     // However, double click should never be delivered to handlers.
     if (!pointerEvent->isDoubleClickEvent()) {
+        bool wasAccepted = pointerEvent->allPointsAccepted();
         itemPrivate->handlePointerEvent(pointerEvent);
-        allowDoubleClick = !(pointerEvent->asPointerMouseEvent() && pointerEvent->isPressEvent() && pointerEvent->allPointsAccepted());
+        allowDoubleClick = wasAccepted || !(pointerEvent->asPointerMouseEvent() && pointerEvent->isPressEvent() && pointerEvent->allPointsAccepted());
     }
     if (handlersOnly)
         return;
@@ -2822,17 +2832,10 @@ bool QQuickWindowPrivate::sendFilteredPointerEventImpl(QQuickPointerEvent *event
                 // get a touch event customized for delivery to filteringParent
                 QScopedPointer<QTouchEvent> filteringParentTouchEvent(pte->touchEventForItem(receiver, true));
                 if (filteringParentTouchEvent) {
-                    QVarLengthArray<QPair<QQuickPointerHandler *, QQuickEventPoint *>, 32> passiveGrabsToCancel;
                     if (filteringParent->childMouseEventFilter(receiver, filteringParentTouchEvent.data())) {
                         qCDebug(DBG_TOUCH) << "touch event intercepted by childMouseEventFilter of " << filteringParent;
                         skipDelivery.append(filteringParent);
                         for (auto point: qAsConst(filteringParentTouchEvent->touchPoints())) {
-                            auto pointerEventPoint = pte->pointById(point.id());
-                            for (auto handler : pointerEventPoint->passiveGrabbers()) {
-                                QPair<QQuickPointerHandler *, QQuickEventPoint *> grab(handler, pointerEventPoint);
-                                if (!passiveGrabsToCancel.contains(grab))
-                                    passiveGrabsToCancel.append(grab);
-                            }
                             QQuickEventPoint *pt = event->pointById(point.id());
                             pt->setAccepted();
                             pt->setGrabberItem(filteringParent);
@@ -2878,12 +2881,6 @@ bool QQuickWindowPrivate::sendFilteredPointerEventImpl(QQuickPointerEvent *event
                                         touchMouseUnset = false; // We want to leave touchMouseId and touchMouseDevice set
                                         if (mouseEvent->isAccepted())
                                             filteringParent->grabMouse();
-                                        auto pointerEventPoint = pte->pointById(tp.id());
-                                        for (auto handler : pointerEventPoint->passiveGrabbers()) {
-                                            QPair<QQuickPointerHandler *, QQuickEventPoint *> grab(handler, pointerEventPoint);
-                                            if (!passiveGrabsToCancel.contains(grab))
-                                                passiveGrabsToCancel.append(grab);
-                                        }
                                     }
                                     filtered = true;
                                 }
@@ -2899,8 +2896,6 @@ bool QQuickWindowPrivate::sendFilteredPointerEventImpl(QQuickPointerEvent *event
                             }
                         }
                     }
-                    for (auto grab : passiveGrabsToCancel)
-                        grab.second->cancelPassiveGrab(grab.first);
                 }
             }
         }
diff --git a/src/quick/items/qquickwindow_p.h b/src/quick/items/qquickwindow_p.h
index 2d7b81cec8..b17fdf7a49 100644
--- a/src/quick/items/qquickwindow_p.h
+++ b/src/quick/items/qquickwindow_p.h
@@ -167,6 +167,7 @@ public:
 
     // the device-specific event instances which are reused during event delivery
     mutable QVector<QQuickPointerEvent *> pointerEventInstances;
+    QQuickPointerEvent *queryPointerEventInstance(QQuickPointerDevice *device, QEvent::Type eventType = QEvent::None) const;
     QQuickPointerEvent *pointerEventInstance(QQuickPointerDevice *device, QEvent::Type eventType = QEvent::None) const;
 
     // delivery of pointer events:
diff --git a/src/quick/scenegraph/adaptations/software/qsgabstractsoftwarerenderer_p.h b/src/quick/scenegraph/adaptations/software/qsgabstractsoftwarerenderer_p.h
index c68a933384..f20c2cf977 100644
--- a/src/quick/scenegraph/adaptations/software/qsgabstractsoftwarerenderer_p.h
+++ b/src/quick/scenegraph/adaptations/software/qsgabstractsoftwarerenderer_p.h
@@ -104,7 +104,7 @@ private:
 
     QRegion m_dirtyRegion;
     QRegion m_obscuredRegion;
-    bool m_isOpaque;
+    bool m_isOpaque = false;
 
     QSGSoftwareRenderableNodeUpdater *m_nodeUpdater;
 };
diff --git a/src/quick/util/qquickanimatorcontroller.cpp b/src/quick/util/qquickanimatorcontroller.cpp
index 3f7347c01d..5cf8051922 100644
--- a/src/quick/util/qquickanimatorcontroller.cpp
+++ b/src/quick/util/qquickanimatorcontroller.cpp
@@ -123,8 +123,10 @@ static void qquickanimator_sync_before_start(QAbstractAnimationJob *job)
 
 void QQuickAnimatorController::beforeNodeSync()
 {
-    for (const QSharedPointer<QAbstractAnimationJob> &toStop : qAsConst(m_rootsPendingStop))
+    for (const QSharedPointer<QAbstractAnimationJob> &toStop : qAsConst(m_rootsPendingStop)) {
         toStop->stop();
+        m_animationRoots.remove(toStop.data());
+    }
     m_rootsPendingStop.clear();
 
 
diff --git a/src/quickwidgets/qquickwidget.cpp b/src/quickwidgets/qquickwidget.cpp
index bbe0192eac..bdf9401997 100644
--- a/src/quickwidgets/qquickwidget.cpp
+++ b/src/quickwidgets/qquickwidget.cpp
@@ -1399,6 +1399,7 @@ bool QQuickWidget::event(QEvent *e)
 
     switch (e->type()) {
 
+    case QEvent::Leave:
     case QEvent::TouchBegin:
     case QEvent::TouchEnd:
     case QEvent::TouchUpdate:
@@ -1452,6 +1453,14 @@ bool QQuickWidget::event(QEvent *e)
     case QEvent::ShortcutOverride:
         return QCoreApplication::sendEvent(d->offscreenWindow, e);
 
+    case QEvent::Enter: {
+        QEnterEvent *enterEvent = static_cast<QEnterEvent *>(e);
+        QEnterEvent mappedEvent(enterEvent->localPos(), enterEvent->windowPos(),
+                                enterEvent->screenPos());
+        const bool ret = QCoreApplication::sendEvent(d->offscreenWindow, &mappedEvent);
+        e->setAccepted(mappedEvent.isAccepted());
+        return ret;
+    }
     default:
         break;
     }